Is my image uploaded?

No. The conversion happens in your browser using the canvas — there's no upload endpoint.

What happens to PNG transparency?

JPG doesn't support transparency, so transparent areas are flattened onto a white background. If you need transparency, convert to WebP instead — same tool, different target.

How much smaller will the JPG be?

Screenshots and photos typically shrink 5–10×. Flat graphics with few colors may not — those are what PNG is actually good at.

Does converting lose quality?

JPG is lossy, so there's some loss — controlled by the quality slider. At 85–90% most photos are visually identical at a fraction of the size.

Can I convert many PNGs at once?

Yes — use the Batch tool to convert and compress a whole folder into a zip in one pass.

PNG to JPG, no upload.

Drop a PNG and it is re-encoded as a JPG on your device — pick the quality, watch the size, never send it anywhere.

Convert PNG images to JPG in your browser — no upload, no signup, no quality games. PNGs are wonderful for screenshots and graphics but often enormous; converting to JPG typically cuts the size by 5–10×, which is exactly what you need for email attachments, upload forms with size caps, and faster pages. The conversion runs on your device with a quality slider, so you decide the size/quality trade-off and nothing is ever sent anywhere.

How it works

1
Drop your PNG
Drag a PNG onto the page. It opens in the GhostImage studio with Convert → JPG pre-selected.
2
Set the quality
Pick the JPG quality — higher for photos you'll print, lower for a form upload with a size cap. The preview and size update live, locally.
3
Download the JPG
Save the converted image — or keep chaining: resize it, strip its metadata, or compress it further in the same tab.

Frequently asked questions

Is my image uploaded?
No. The conversion happens in your browser using the canvas — there's no upload endpoint.
What happens to PNG transparency?
JPG doesn't support transparency, so transparent areas are flattened onto a white background. If you need transparency, convert to WebP instead — same tool, different target.
How much smaller will the JPG be?
Screenshots and photos typically shrink 5–10×. Flat graphics with few colors may not — those are what PNG is actually good at.
Does converting lose quality?
JPG is lossy, so there's some loss — controlled by the quality slider. At 85–90% most photos are visually identical at a fraction of the size.
Can I convert many PNGs at once?
Yes — use the Batch tool to convert and compress a whole folder into a zip in one pass.

Related image tools

JPG to PNG

Convert to lossless PNG for editors and forms that demand it.

Compress image

Shrink JPG, PNG, WebP, AVIF, or HEIC with a quality slider.

Batch compress

Compress a whole folder of images at once, zipped for download.

Favicon generator

Turn a logo into the full .ico + PNG icon set your site needs.

Every GhostImage tool runs entirely in your browser. Your file is never uploaded — there's no upload endpoint to send it to.